This is the new Doom on Ultra Nightmare difficulty, it is identical to a single segment Nightmare difficulty run, as in you cannot die. Should be the first completed Ultra Nightmare after game released, last played is shown as 5/14/2016 8:50:48pm in the video at the end. I won't start uploading let's plays to this channel, but I'll make an exception since this game is a worthy Doom game and it is a single segment run too! I run the game on low settings with minimal FOV, so I would recommend a different video if you are curious how it looks at better settings. Edit: I did a run on ultra settings with FOV at 105 where I didn't use any upgrades here: https://www.youtube.com/watch?v=RR1G05e0bjs It's not entertaining gameplay in some parts, but it gets the job done. Making a run this long was completely new for me, my longest single segment run was just under 45 minutes with my old Final Doom: TNT Evilution record. So almost 4 hours and 45 minutes was exhausting. That is also part of the reason why I couldn't be bothered to grab some of the secrets, but I'm sure someone else can do a 100% run, it has never been my kind of thing. Also, I managed to die just before the final boss yesterday (at 4:35:20 you can see for a couple of frames my helmet where I died, I forgot to get a closer look), however I hadn't practiced the final boss at all so I am not too disappointed by that, and I didn't even record that one. Had some moments where I should have died late in this run too, but sometimes you get lucky! I don't really want to comment too much about this run, like why I do things the way I do. I am sure there are better movement techniques and choice of weapon modes and overall just how to play the game. I just want to note that my first playthrough was a bit more intense, runes that give you infinite ammo if you have 100 (75) armor won't be this useful on a first playthrough for example, it allowed me to keep my distance sometimes or make some parts rather easy. Also when you are 4+ hours in and death means you have to do it all over again, it changes your playstyle. I don't see myself doing any speedruns of this game because I expect any competition to be on easiest difficulty, and that's a bit too boring. Running it on nightmare is just too long for me, of course we might see sequence breaks discovered which makes the game shorter, but it would have to be to the point it becomes too easy again. If you haven't watched any of my speedruns before, I would recommend my current best time for Doom 2 on Nightmare difficulty (https://www.youtube.com/watch?v=8FleRgH2NaQ), it's a good combination of a really good time in a very challenging game, or if you want to see the most challenging doom run there is and my greatest achivement in doom, then my Final Doom: The Plutonia Experiment on Nightmare (https://www.youtube.com/watch?v=EUBUYWIZUpE) might be a good watch. Enjoy! Thanks to id Software for making this absolutely amazing campaign! Very fun game, I highly recommend it.